2 * collectd - src/owfs.c
3 * Copyright (C) 2008 Florian octo Forster
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Florian octo Forster <octo at noris.net>
25 #include "utils_ignorelist.h"
29 #define OW_FAMILY_LENGTH 8
30 #define OW_FAMILY_MAX_FEATURES 2
31 struct ow_family_features_s
33 char family[OW_FAMILY_LENGTH];
36 char filename[DATA_MAX_NAME_LEN];
37 char type[DATA_MAX_NAME_LEN];
38 char type_instance[DATA_MAX_NAME_LEN];
39 } features[OW_FAMILY_MAX_FEATURES];
42 typedef struct ow_family_features_s ow_family_features_t;
44 /* see http://owfs.sourceforge.net/ow_table.html for a list of families */
45 static ow_family_features_t ow_family_features[] =
51 /* filename = */ "temperature",
52 /* type = */ "temperature",
53 /* type_instance = */ ""
56 /* features_num = */ 1
59 static int ow_family_features_num = STATIC_ARRAY_SIZE (ow_family_features);
61 static char *device_g = NULL;
62 static cdtime_t ow_interval = 0;
64 static const char *config_keys[] =
71 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
73 static ignorelist_t *sensor_list;
75 static int cow_load_config (const char *key, const char *value)
77 if (sensor_list == NULL)
78 sensor_list = ignorelist_create (1);
80 if (strcasecmp (key, "Sensor") == 0)
82 if (ignorelist_add (sensor_list, value))
84 ERROR ("sensors plugin: "
85 "Cannot add value to ignorelist.");
89 else if (strcasecmp (key, "IgnoreSelected") == 0)
91 ignorelist_set_invert (sensor_list, 1);
93 ignorelist_set_invert (sensor_list, 0);
95 else if (strcasecmp (key, "Device") == 0)
98 temp = strdup (value);
101 ERROR ("onewire plugin: strdup failed.");
107 else if (strcasecmp ("Interval", key) == 0)
112 ow_interval = DOUBLE_TO_CDTIME_T (tmp);
114 ERROR ("onewire plugin: Invalid `Interval' setting: %s", value);
124 static int cow_read_values (const char *path, const char *name,
125 const ow_family_features_t *family_info)
128 value_list_t vl = VALUE_LIST_INIT;
132 if (sensor_list != NULL)
134 DEBUG ("onewire plugin: Checking ignorelist for `%s'", name);
135 if (ignorelist_match (sensor_list, name) != 0)
142 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
143 sstrncpy (vl.plugin, "onewire", sizeof (vl.plugin));
144 sstrncpy (vl.plugin_instance, name, sizeof (vl.plugin_instance));
146 for (i = 0; i < family_info->features_num; i++)
155 snprintf (file, sizeof (file), "%s/%s",
156 path, family_info->features[i].filename);
157 file[sizeof (file) - 1] = 0;
161 status = OW_get (file, &buffer, &buffer_size);
164 ERROR ("onewire plugin: OW_get (%s/%s) failed. status = %#x;",
165 path, family_info->features[i].filename, status);
170 values[0].gauge = strtod (buffer, &endptr);
173 ERROR ("onewire plugin: Buffer is not a number: %s", buffer);
178 sstrncpy (vl.type, family_info->features[i].type, sizeof (vl.type));
179 sstrncpy (vl.type_instance, family_info->features[i].type_instance,
180 sizeof (vl.type_instance));
182 plugin_dispatch_values (&vl);
186 } /* for (i = 0; i < features_num; i++) */
188 return ((success > 0) ? 0 : -1);
189 } /* int cow_read_values */
191 /* Forward declaration so the recursion below works */
192 static int cow_read_bus (const char *path);
198 * - DS2409 - MicroLAN Coupler
200 static int cow_read_ds2409 (const char *path)
205 status = ssnprintf (subpath, sizeof (subpath), "%s/main", path);
206 if ((status > 0) && (status < sizeof (subpath)))
207 cow_read_bus (subpath);
209 status = ssnprintf (subpath, sizeof (subpath), "%s/aux", path);
210 if ((status > 0) && (status < sizeof (subpath)))
211 cow_read_bus (subpath);
214 } /* int cow_read_ds2409 */
216 static int cow_read_bus (const char *path)
227 status = OW_get (path, &buffer, &buffer_size);
230 ERROR ("onewire plugin: OW_get (%s) failed. status = %#x;",
234 DEBUG ("onewire plugin: OW_get (%s) returned: %s",
239 while ((buffer_ptr = strtok_r (dummy, ",/", &saveptr)) != NULL)
245 if (strcmp ("/", path) == 0)
246 status = ssnprintf (subpath, sizeof (subpath), "/%s", buffer_ptr);
248 status = ssnprintf (subpath, sizeof (subpath), "%s/%s",
250 if ((status <= 0) || (status >= sizeof (subpath)))
253 for (i = 0; i < ow_family_features_num; i++)
255 if (strncmp (ow_family_features[i].family, buffer_ptr,
256 strlen (ow_family_features[i].family)) != 0)
259 cow_read_values (subpath,
260 buffer_ptr + strlen (ow_family_features[i].family),
261 ow_family_features + i);
264 if (i < ow_family_features_num)
268 if (strncmp ("1F.", buffer_ptr, strlen ("1F.")) == 0)
270 cow_read_ds2409 (subpath);
273 } /* while (strtok_r) */
277 } /* int cow_read_bus */
279 static int cow_read (user_data_t *ud __attribute__((unused)))
281 return (cow_read_bus ("/"));
284 static int cow_shutdown (void)
287 ignorelist_free (sensor_list);
289 } /* int cow_shutdown */
291 static int cow_init (void)
294 struct timespec cb_interval;
296 if (device_g == NULL)
298 ERROR ("onewire plugin: cow_init: No device configured.");
302 status = (int) OW_init (device_g);
305 ERROR ("onewire plugin: OW_init(%s) failed: %i.", device_g, status);
309 CDTIME_T_TO_TIMESPEC (ow_interval, &cb_interval);
311 plugin_register_complex_read (/* group = */ NULL, "onewire", cow_read,
312 (ow_interval != 0) ? &cb_interval : NULL,
313 /* user data = */ NULL);
314 plugin_register_shutdown ("onewire", cow_shutdown);
319 void module_register (void)
321 plugin_register_init ("onewire", cow_init);
322 plugin_register_config ("onewire", cow_load_config,
323 config_keys, config_keys_num);
326 /* vim: set sw=2 sts=2 ts=8 et fdm=marker cindent : */